Finding the Fourth Proportional to 9,986.72, 13,784.52 and 5,794.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.72 : 13,784.52 = 5,794.16 : x
2. Step 2: Convert to fraction form
   9,986.72/13,784.52 = 5,794.16/x
3. Step 3: Cross multiply
   9,986.72x = 13,784.52 × 5,794.16
4. Step 4: Simplify right side
   9,986.72x = 79,869,714.40
5. Step 5: Solve for x
   x = 79,869,714.40/9,986.72
6. Step 6: Final answer
   x = 7,997.59